This is the first thing I noticed...


Smack this part where it meets the plunger with a hammer. Do it all the way aroud to braek the glue, and remove the one screw

The ya have it. The plunger is also tapered, so only the last like 2 inches actually gets any compression with this seal. Same with the Magnus. Any questions? Just be aware, that if it doesn't break the glue just right, you will have to repair the plunger tube where it separates. If that makes sense